WID-SEC-W-2025-2880

csafDEcert_bund

DeutschShown in its original language — a full translation is planned for a future version.

Mattermost Server und Desktop: Mehrere Schwachstellen

view advisory published 2025-12-17

Ein Angreifer kann mehrere Schwachstellen in Mattermost Server und Desktop ausnutzen, um Informationen offenzulegen, Sicherheitsmechanismen zu umgehen und um einen Denial of Service Zustand herbeizuführen.

01

describes (5)

Related CVEs.

IDseverity exploitable
CVE-2025-14435USmedium6.5—
Mattermost versions 10.11.x <= 10.11.8, 11.1.x <= 11.1.1, 11.0.x <= 11.0.6 fail to prevent infinite re-renders on API errors which allows authenticated users to cause application-l…
CVE-2025-14822USmedium6.5—
Mattermost versions 10.11.x <= 10.11.8 fail to validate input size before processing hashtags which allows an authenticated attacker to exhaust CPU resources via a single HTTP requ…
CVE-2025-13326US——
Mattermost Desktop App versions <6.0.0 fail to enable the Hardened Runtime on the Mattermost Desktop App when packaged for Mac App Store which allows an attacker to inherit TCC per…
CVE-2025-13321US——
Mattermost Desktop App versions <6.0.0 fail to sanitize sensitive information from Mattermost logs and clear data on server deletion which allows an attacker with access to the use…
CVE-2025-12689US——
Mattermost versions 11.0.x <= 11.0.4, 10.12.x <= 10.12.2, 10.11.x <= 10.11.6 fail to check WebSocket request field for proper UTF-8 format, which allows attacker to crash Calls plu…
02

references

External citations — patches, advisories, analysis.

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